Wrong number of floors

Hello,

I scanned 4 floors, marked all in the capture app but when the model is processed, there is only 3 in the result. 

The “missing level” is a kind of mezzanine under the roof of the house which was difficult to scan because of the tiny space.

I also can’t access to some scan.

I make some screen shots to explain.

How I can process to make the 4 floors visible? 

I need to order floor plan...

thanks,

Laurent